Grease dispensing apparatus



Jan. 16, 1.934. l E. w. D-Avis 3,943,515

GREASE DI SPENS ING APPARATUS Original Filed Oct. 9, 1929 J7 5.9 Q47A47`j5 IAYIIIIJI'I,

Patente-d Jan. 16, 1934 Gasser: msrENsiNo APPARATUS Ernest W. Davis, OakPark, Ill., assignor to Alemite Corporation, Chicago, Ill., acorporation of Delaware @riginal application October 9, 1929, Serial No.398,323. Divided vand this application May 16,

Serial N o. 611,494

Claims. (C1. 22d-47.1)

My invention relates in general to dispensing apparatus, and inparticular tothat class of apparatus utilized for effecting thedischarge of plastic and semi-fluid materials such as grease, pastos,etc., under a high pressure.

An object of my invention is the provision of a device capable ofdischarging extremelyviscous semi-fluids at a high pressure.

A further object of my invention is the provision of a rotary spiralconveyor for advancing the material to helical conveyor screws fordischarging the same at a high pressure.

Another object of my invention is the provision in a device of the typespeciiied of a new and im- 15 proved method of discharging the materialby means of intermeshing conveyor screws. Afurther object of myinvention is the provision of a new and improved type of lubricantcontainer for use with my dispensing apparatus.

A further object of my invention vis the provision of a container forsemi-fluid substances .having vanes and Scrapers therein for looseningthe material from the walls of the container to facilitate the dischargeof said material.

2,5 Another object of my invention is the provision of a Vhighlyefficient device susceptible of inexpensive commercial production.k

Other objects and advantages of my invention will be discernible fromthe following description, reference being made to the accompanyingsheet of drawings, in which:

Fig.. 1 is a vertical cross sectional view of my improved dispenser;

Fig. 2 is a plan view taken on the line 2-2 of Fig. 1; and

Fig. 3 is a View taken on the line 3 3 of Fig. 1.

This application is a division of my prior copending application, SerialNo. 398,323, filed October 9, 1929for Grease dispensing apparatus, whichhas matured into Patent No. 1,859,290,

granted May 24, 1932.

In the embodiment of my invention illustrated in Fig. 1 of the drawing,I have shown a convtainer indicated generally at 19, substantially in 4the form of `two intersecting cones l2, having di- Y vergeht axes,supported upon a base plate 14 which is provided with apertures 15 forbolting the dispenser to a foundation if desired.

The container 10 is provided at the top with a septum `18 havingapertures 20 therein. A cover 22 pivoted on the hinge 24 encases theygearing mechanism positioned above the septum and serves asa closurefor the container. v

The container provides a chamber 26 for housingthe grease impelling andejecting mechanism,

tion, I have set the blades upon the' shaftv 29 which comprisesa pair ofdivergently mounted shafts v28, 29 journaled at their lower ends insockets 30, 31 respectively in the bottom wall .of the container, and attheir upper ends in suitable bearings 32 and 33 provided in the septum18. 6,0 Suitably secured upon each of the shafts 28 and 29 at the lowerend thereof are intermeshing helical conveyor screws 34 and 35. Abovethe helical conveyor screws 34, 35 and secured to the shafts 28 and 29are a plurality of vanes 66 or blades 36 alternately positioned onopposite sides of the shafts 28 and 29; these blades being inclined inthe direction of their rotation and having a concave surface forengaging the grease Vand feeding the same downwardly in the conv,7.0

tainer. Referring to Fig. 2 of the drawing, the relative position of theblades carried by each of the shafts is shown. In order thatl the bladesof the respective shafts do not clash during rotaslightly ahead. of theblade on the shaft 28.

Above the septum, bevel gears 37 and 38, suitably secured to the shafts28, 29 respectively, are adapted to mesh with gears 39 and 40 securedupon a driving shaft 42. The driving shaft 42 is journaled in bearings4A and 46 mounted upon the septum 18. In order that the blades of therespective shaftsrotate in opposite directions the gears 39 and 40 aresecured at opposite sides of the bevel gears 37 and 38 respectively. 35A crank handle 48 adapted to berotated in a clockwise direction isprovided at the outer end Vof the driving shaft 42 for operating thedis-Y pensing mechanism.

The helical screw conveyors 34 and 35 are 90 preferably frusto conicalin design but under certain conditions these conveyors might be made inthe shape of threaded cylinders. From an inspection of Fig. 3 it will benoted that the housing wall of the container 10 closely sur- 9,5

`rounds the conveyors lto preclude the bypassing `of the grease betweenthe wall of the container and the conveyor threads. These screwconveyors 34 and 35 have right and left hand threads so arranged thatthey intermesh and so that the conveyors may be revolved in oppositedirections. At the bottom of the chamber a port 50 is provided having asuitable conduit 52 for conducting the discharged material to anydesired outlet.

In operation, the container is charged, with the material to bedispensed, through apertures 2) in the septum 18. The manipulation ofthe crank handle in a clockwise direction effects the rotation of theblades and the conveyor screws carried by the shafts 28 and 29. Therotation 110 of the blades compacts the material with which thecontainer is charged, advances the same downwardly in the chamber, andfeeds it to the helical conveyor screws 34 and 35. These conveyor screwsrotating in opposite directions, eject the grease through port 50 fromthe container and into the conduit 52.

While the embodiment of the invention illustrated is manually operableit is evident that a motor-driven connection may be substituted withoutdeparting from the spirit of the invention, and I therefore desire thepresent embodiment to be considered inall respects as illustrative andnot restrictive, reference being had to the appended claims rather thanthe foregoing description to indicate the scope of my invention.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is:

l. A device for dispensing grease, including an invertedbi-conoidal-shaped grease chamber, a discharge conduit communicatingwith its lower end, a plurality of conveyor shafts mounted therein,means for rotating said shafts in opposite directions, a plurality ofinclined blades rigidly attached to at least one of said shafts andintermeshing screw conveyors on said shafts adjacent the lower end ofsaid chamber.

2. A device for dispensing grease, including an invertedbi-conoidal-shaped grease chamber, a discharge conduit communicatingwith its lower end, a plurality of conveyor shafts mounted therein,means for rotating said shafts in opposite directions, a plurality ofinclined blades rigidly attached to at least one of said shafts andintermeshing conically-shaped screw conveyors on said shafts adjacentthe lower end of said chamber.

3. A device for dispensing grease, including an invertedbi-conoidal-shaped grease chamber, a discharge conduit communicatingwith its lower end, a plurality of conveyor shafts mounted therein,means for rotating said shafts in opposite directions, a plurality ofinclined blades rigidly attached to at least one of said shafts andintermeshing right and left hand screw conveyors on said shafts adjacentthe lower end of said chamber.

4. In an apparatus for dispensing grease, a container having a reducedportion therein, a pair of intermeshing single thread screw conveyors inthe reduced portion of said container, means for rotating said conveyorsin opposite directions and an outlet conduit communicating with thelower end of said reduced portion for discharging grease under pressure.

5. In an apparatus for dispensing grease, a container having a reducedportion therein, a pair of substantially vertical intermeshing spiralscrew conveyors in the reduced portion of said chamber, the pitch of thescrew thread on each of said conveyors being such that a plurality ofconvolutions of the same thread will be intermeshed with the otherconveyor at all times, means for rotating said conveyors in oppositedirections, and an outlet conduit communicating with the smaller end ofsaid reduced portion for discharging grease under pressure.

6. In an apparatus for dispensing semi-solids, an invertedbi-conoidal-shaped container having an outlet conduit communicating withthe lower end thereof, a pair of substantially vertical conveyor shaftsmounted in said container, means for rotating said shafts in oppositedirections, a

plurality of blades rigidly attached to said shafts, intermeshingconical screw conveyors on said shaft adjacent the lower end of saidcontainer and positioned closely adjacent the inner Walls thereof.

7. In an apparatus for dispensing lubricants, a double intersectingcone-shaped container having an outlet conduit communicating with oneend thereof, a plurality of conveyor shafts longitudinally mounted insaid container, means for rotating said shafts, a plurality of bladesrigidly attached to said shafts, intermeshing screw conveyors on saidshafts adjacent the discharge end of said container and positionedsubstantially in contact with the walls thereof.

8. In a device for dispensing plastic materials, the combination of acontainer, having integral twin cone-shaped body portions, With anoutlet at the bottom of said container, divergently mounted shafts insaid container positioned coincidental with the axes of the cone-shapedbody portions, and single thread intermeshing spiral means carried bysaid shafts cooperating with said body members for effecting thedischarge of material from the container through said outlet.

9. In a grease dispensing device the combination of a container, havingan outlet port, with a pair of shafts divergently mounted in saidcontainer, a helical conveyor screw secured to each of said shaftsadjacent the outlet port of said container, said conveyor screws beingadapted to intermesh, a plurality of vanes secured to each of saidshafts, and means for rotating the vanes and conveyor screw carried bythe respective shafts to effect the discharge of grease from saidcontainer.

10. In a grease dispensing device the combination of a containercomprising twin body portions with an outlet port therefor, a shaftcarrying a plurality of blades and a conveyor screw mounted in each ofsaid body portions, the conveyor screws being mounted to effect anintermeshing action, and means for effecting the rotation of saidconveyor screws to discharge grease fromV said container through saidoutlet port.

l1. In a grease dispensing device the combination of a container havingan outlet port, a pair of shafts divergently mounted in said container,a pair of intermeshing helical screw conveyors secured to said shaftsrespectively and mounted adjacent the outlet port of said container,means for rotating said shaft and screws to effect the discharge ofgrease from said container through said outlet port, and a plurality ofvanes secured to each of said shafts and adapted to rotate therewith,said vanes being adapted to feed grease to said conveyor screws.

12. In a grease dispensing device the combination of a container havinga supporting base therefor with means for effecting the discharge ofgrease from said container, said means cornprising a pair of shaftsmounted in said container, intermeshing conveyor screws and a pluralityof blades carried by said shafts, and gearing mechanism operative toeffect the rotation of said shafts, screws and blades for discharginggrease from said container.

13. In a grease dispensing device the combination of an integralcontainer comprising twin body portions with a supporting base therefor,a shaft in each of said body portions carrying c0- cperating means foreffecting the discharge of grease from said container, an aperturedpartition secured to the container and providing bearing surfaces forsaid shafts, a cover hingedly seeach of said means having at least onecomplete convolution.

15. 'In a grease dispensing device, the combination of a containerhaving an outlet port, a pair of shafts mounted in said container,v andcooperating spiral means carried by each of said shafts for discharginggrease from said container, said spiral means comprising helical screwmembers secured adjacent the outlet port, and a plurality of vanespositioned above said screw members for feeding grease downwardly tosaid screw members.

ERNEST W. DAVIS.

